Install Elasticsearch on Amazon Linux (EC2)

Elasticsearch_AWS_Linux.md

Installing Elasticsearch on AWS Linux AMI

The following will guide you through the process of installing Elasticsearch on an AWS EC2 instance running Amazon Linux AMI 2016.09 - Release Notes

For this process I'll be using a t2.micro EC2 instance running Amazon Linux AMI. Once the EC2 instance is up-and-running, connect to your server via ssh.

Install JAVA 8

sudo yum install java-1.8.0
sudo yum remove java-1.7.0-openjdk

Installing Elasticsearch using RPM

$ sudo rpm -i https://download.elastic.co/elasticsearch/release/org/elasticsearch/distribution/rpm/elasticsearch/2.3.3/elasticsearch-2.3.3.rpm

Other versions of Elasticsearch are available here. Refer to the guide if you prefer installing with yum.

Register Elasticsearch as a system service.

$ sudo chkconfig --add elasticsearch

Start elasticsearch as a service

$ sudo service elasticsearch start

Once started, let's verify the Elasticsearch cluster by using curl to request the cluster state.

$ curl localhost:9200/_cluster/health?pretty

We should have something as below displayed in the terminal.

{ 
  “cluster_name” : “esonaws”, 
  “status” : “green”, 
  “timed_out” : false, 
  “number_of_nodes” : 3, 
  “number_of_data_nodes” : 3, 
  “active_primary_shards” : 8, 
  “active_shards” : 16, 
  “relocating_shards” : 0, 
  “initializing_shards” : 0, 
  “unassigned_shards” : 0, 
  “delayed_unassigned_shards” : 0, 
  “number_of_pending_tasks” : 0, 
  “number_of_in_flight_fetch” : 0, 
  “task_max_waiting_in_queue_millis” : 0, 
  “active_shards_percent_as_number” : 100.0 
}

You might want to play around the configuration for elasticsearch. To open the configuration file, run:

sudo nano /etc/elasticsearch/elasticsearch.yml

Your Elasticsearch cluster is ready!